<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>圆角-特殊场景</title>
    <style>
        img {
            width: 200px;
            height: 200px;
            /* border-radius: 100px; */
            /* 最大值50% 超过50%没效果 */
            border-radius: 50%;
        }
        div{
            width: 200px;
            height: 80px;
            background-color: red;
            border-radius: 40px;
        }
    </style>
</head>
<body>
    <img src="../CSS02day/images/1.jpg" alt="">
    <div></div>
</body>
</html>